mirror of
https://github.com/Dovgalyuk/MacDiskExtractor.git
synced 2024-06-05 23:29:28 +00:00
270 lines
8.5 KiB
C++
270 lines
8.5 KiB
C++
#include <iostream>
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#include <fstream>
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#include <string>
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#include <vector>
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#include <iomanip>
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#define LOGBLOCK_LENGTH 512
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#define ALLOCBLOCK_LENGTH LOGBLOCK_LENGTH * 2
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#define VINF_OFFSET LOGBLOCK_LENGTH * 2
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#define ABMAP_OFFSET VINF_OFFSET + 64
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#define FDIR_OFFSET LOGBLOCK_LENGTH * 4
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using namespace std;
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class Disk {
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fstream disk;
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Disk() {
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disk.open("copy.dsk", ios_base::binary | ios_base::in);
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disk.seekg(VINF_OFFSET + 16);
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drBILen = readByte(2);
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drNmAIBIks = readByte(2);
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allocBlockMap.resize(drNmAIBIks);
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disk.seekg(ABMAP_OFFSET);
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int temp, val1, val2;
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for (int i = 0; i < drNmAIBIks;) {
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temp = readByte(3);
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val1 = (temp & 0x00FFF000) >> 12;
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val2 = (temp & 0x00000FFF);
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allocBlockMap[i++] = val1;
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allocBlockMap[i++] = val2;
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}
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}
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~Disk() {
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disk.close();
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}
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Disk(const Disk&) = delete;
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Disk& operator=(const Disk&) = delete;
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public:
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int drBILen;
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int drNmAIBIks;
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vector<int> allocBlockMap;
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int readByte(int size) {
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int res = 0;
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for (int i = 0; i < size; ++i) {
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res = res << 8;
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res |= disk.get();
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}
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return res;
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}
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string readString(int size) {
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char *temp = new char[size + 1];
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disk.get(temp, size + 1);
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string stemp(temp);
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delete temp;
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return stemp;
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}
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static fstream& getDiskStream() {
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return getDisk().disk;
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}
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static Disk& getDisk() {
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static Disk _this;
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return _this;
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}
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static int getFContOffset() {
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return FDIR_OFFSET + LOGBLOCK_LENGTH * getDisk().drBILen;
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}
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static int findFile(int offset) {
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Disk::getDiskStream().seekg(offset);
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while (!(Disk::getDisk().readByte(1) && 0x80)) {
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++offset;
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}
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return offset;
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}
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static void volumeInfo() {
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int temp;
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Disk::getDiskStream().seekg(64 * 16);
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cout << hex;
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cout << "--------------------" << endl;
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cout << "Volume Information" << endl;
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cout << "--------------------" << endl;
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cout << "always $D2D7 " << Disk::getDisk().readByte(2) << endl;
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cout << "date and time of initialization " << Disk::getDisk().readByte(4) << endl;
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cout << "date and time of last backup " << Disk::getDisk().readByte(4) << endl;
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cout << "volume attributes " << Disk::getDisk().readByte(2) << endl;
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cout << "number of files in directory " << Disk::getDisk().readByte(2) << endl;
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cout << "first block of directory " << Disk::getDisk().readByte(2) << endl;
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cout << "length of directory in blocks " << Disk::getDisk().readByte(2) << endl;
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cout << "number of allocation blocks on volume " << Disk::getDisk().readByte(2) << endl;
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cout << "size of allocation blocks " << Disk::getDisk().readByte(4) << endl;
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cout << "number of bytes to allocate " << Disk::getDisk().readByte(4) << endl;
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cout << "first allocation block in block map " << Disk::getDisk().readByte(2) << endl;
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cout << "next unused file number " << Disk::getDisk().readByte(4) << endl;
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cout << "number of unused allocation blocks " << Disk::getDisk().readByte(2) << endl;
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temp = Disk::getDisk().readByte(1);
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cout << "length of volume name " << temp << endl;
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cout << "characters of volume name " << Disk::getDisk().readString(temp) << endl;
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cout << "--------------------" << endl;
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cout << "Allocation Block Map" << endl;
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cout << "--------------------" << endl;
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int i = 0;
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for (auto &it : getDisk().allocBlockMap) {
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cout << 2 + i++ << "->" << it << " ";
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if (it == 1) {
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cout << endl;
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}
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}
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cout << endl << "--------------------" << endl;
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}
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};
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/* ------------------------------------------------------------------------- */
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class File {
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public:
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int flFIags;
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int flTyp;
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int flUsrWds;
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int flFINum;
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int flStBlk;
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int flLgLen;
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int flPyLen;
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int flRStBlk;
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int flRLgLen;
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int flRPyLen;
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int flCrDat;
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int flMdDat;
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int flNam;
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string flNamS;
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int fBegin;
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int fEnd;
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File(int offset) {
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Disk::getDiskStream().seekg(offset);
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flFIags = Disk::getDisk().readByte(1);
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if (flFIags & 0x80) {
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flTyp = Disk::getDisk().readByte(1);
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flUsrWds = Disk::getDisk().readByte(16);
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flFINum = Disk::getDisk().readByte(4);
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flStBlk = Disk::getDisk().readByte(2);
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flLgLen = Disk::getDisk().readByte(4);
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flPyLen = Disk::getDisk().readByte(4);
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flRStBlk = Disk::getDisk().readByte(2);
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flRLgLen = Disk::getDisk().readByte(4);
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flRPyLen = Disk::getDisk().readByte(4);
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flCrDat = Disk::getDisk().readByte(4);
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flMdDat = Disk::getDisk().readByte(4);
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flNam = Disk::getDisk().readByte(1);
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flNamS = Disk::getDisk().readString(flNam);
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fBegin = offset;
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fEnd = fBegin + 51 + flNam;
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if (fEnd % 2) {
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++fEnd;
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}
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}
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}
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string printAll() {
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return string("--------------------") +
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"\nflags " + to_string(flFIags) +
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"\nversion number " + to_string(flTyp) +
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"\ninformation used by the Finder " + to_string(flUsrWds) +
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"\nfile number " + to_string(flFINum) +
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"\nfirst allocation block of data fork " + to_string(flStBlk) +
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"\nlogical end-of-file of data fork " + to_string(flLgLen) +
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"\nphysical end-of-file of data fork " + to_string(flPyLen) +
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"\nfirst allocation block of resource fork " + to_string(flRStBlk) +
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"\nlogical end-of-file of resource fork " + to_string(flRLgLen) +
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"\nphysical end-of-file of resource fork " + to_string(flRPyLen) +
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"\ndate and time of creation " + to_string(flCrDat) +
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"\ndate and time of last modification " + to_string(flMdDat) +
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"\nlength of file name " + to_string(flNam) +
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"\n--------------------\n";
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}
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string printFileName() {
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return string("File name: ") + flNamS + "\n";
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}
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string getValidFileName() {
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string temp = flNamS;
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auto it = temp.find("/");
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while (it < temp.size()) {
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temp.replace(it, 1, "_");
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it = temp.find("/");
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}
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return temp;
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}
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string saveFile() {
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string temp = "save file: \n";
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Disk::getDiskStream().seekg(Disk::getFContOffset() + (flRStBlk - 2) * ALLOCBLOCK_LENGTH);
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for (int i = 0; i < flRLgLen; ++i) {
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temp += (char)Disk::getDiskStream().get();
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}
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return temp;
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}
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};
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int main() {
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Disk::getDiskStream().seekg(VINF_OFFSET + 12);
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int fileCount = Disk::getDisk().readByte(2);
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vector< File > files;
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int fBegin = FDIR_OFFSET;
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for(int i = 0; i < fileCount; ++i) {
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fBegin = Disk::findFile(fBegin);
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files.emplace_back(fBegin);
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fBegin = files.back().fEnd;
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}
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Disk::volumeInfo();
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system("rm -r Files");
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system("mkdir Files");
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vector< fstream > fileStreams(fileCount);
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for (int i = 0; i < fileCount; ++i) {
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fileStreams[i].open(string("Files/") + to_string(i) + ":" + files[i].getValidFileName() + ".txt", std::fstream::out);
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if (!fileStreams[i].is_open()) {
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cout << "error: file not created: " << files[i].flNamS + ".txt" << endl;
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}
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fileStreams[i] << files[i].printAll() << endl;
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fileStreams[i] << files[i].saveFile() << endl;
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fileStreams[i].close();
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}
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int q1 = Disk::getFContOffset();
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int q2 = q1 + (files.back().flRStBlk - 2) * ALLOCBLOCK_LENGTH;
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int q3 = q2 + files.back().flRPyLen;
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cout << dec;
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cout << "our first file " << q1/ 16 << endl;
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cout << "our end file " << q2 / 16 << endl;
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cout << "our end file end " << q3 / 16 << endl;
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cout << "MB end file " << (q3 + LOGBLOCK_LENGTH * 3) / 16 << endl;
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Disk::getDiskStream().seekg(0, ios::end);
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cout << "Disk size " << Disk::getDiskStream().tellg() / 16 << endl;
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return 1;
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} |