Create bacteria.cpp

Initial commit of bacteria.cpp

bacteria.cpp

@@ -0,0 +1,58 @@
+#include <fstream>
+#include <cstdlib>
+#include <iostream>
+
+using namespace std;
+
+int file_size(const char *filename){
+        ifstream ifile;
+        ifile.open(filename, ios_base::binary | ios_base::ate);
+        int size = ifile.tellg();
+        ifile.close();
+        return size;
+}
+
+int main(int argc,char** argv) {
+        for (int i = 0; i < 2; i++) {
+                // Read my own program
+                ifstream ifile;
+                ifile.open(argv[0], ios::binary) ;
+                int filesize = file_size(argv[0]);
+                int rand_byte = rand() %  ( filesize + 1 );
+                
+                // Devide
+                ofstream ofile;
+                string filename = tempnam(".", "bact-");
+                cout << "Creating new bacteria called: "<< filename << " with size:" << file_size(argv[0]) << '\n';;
+                ofile.open(filename, ios::binary | ios::out);
+
+                if ( ifile.fail() or ofile.fail() ) {
+                   return 1; //error
+                }
+
+                int byte_counter = 0;
+                while (!ifile.eof()) {
+                        unsigned char c;
+
+                        c = ifile.get();
+
+                        if (ifile.fail()) {
+                                break;
+                        }
+                        if (byte_counter == rand_byte and i == 1) {
+                                int bit = rand() % 8;
+                                cout << "Mutating bit: " << bit << " of byte: " << byte_counter << '\n';
+                                c ^= (1u << bit);
+                        }
+                        ofile.put(c);
+                        byte_counter++;
+                }
+
+                ofile.close();
+                string executable = "/bin/chmod +x " + filename;
+                string run = filename;
+                system(executable.c_str());
+                //system(run.c_str());
+        }
+        return 0;
+}