ShellcodeCompiler/ShellcodeCompiler/Utils.cpp at master · dnangle/ShellcodeCompiler · GitHub

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#include "Utils.h"

// Check if a file exists

bool Utils::FileExists(string p_sPath)

{

if (FILE * file = fopen(p_sPath.c_str(), "r")) {

fclose(file);

return true;

}

else {

return false;

}

// Delete a file

bool Utils::DeleteSourceFile(string p_sFile)

{

return (bool)remove(p_sFile.c_str());

}

// Function used to read a file

string Utils::ReadSourceFile(string p_sFilename)

{

string contents = "";

FILE* f = fopen(p_sFilename.c_str(), "rb");

// Get file size

fseek(f, 0, SEEK_END);

size_t size = ftell(f);

char* cdata = new char[size + 1];

cdata[size] = '\0';

// Read file

rewind(f);

fread(cdata, sizeof(char), size, f);

fclose(f);

// Return data

contents = cdata;

delete[] cdata;

return contents;

}

// Get the size of a file

size_t Utils::GetSize(string p_sFilename)

{

size_t size;

FILE* f = fopen(p_sFilename.c_str(), "rb");

// Get file size

fseek(f, 0, SEEK_END);

size = ftell(f);

rewind(f);

fclose(f);

return size;

}

// Read binary file

unsigned char* Utils::ReadBinaryFile(string p_sFilename, size_t *p_rSize)

{

unsigned char *p = NULL;

FILE* f = NULL;

size_t res = 0;

if (!FileExists(p_sFilename))

{

cout << "Binary file does not exists!" << endl;

return NULL;

}

// Get size and allocate space

*p_rSize = GetSize(p_sFilename);

if (*p_rSize == 0) return NULL;

f = fopen(p_sFilename.c_str(), "rb");

p = new unsigned char[*p_rSize];

// Read file

rewind(f);

res = fread(p, sizeof(unsigned char), *p_rSize, f);

fclose(f);

if (res == 0)

{

delete[] p;

return NULL;

}

return p;

}

// Write output to file

void Utils::WriteToFile(string p_sOutputFile, string p_sData)

{

FILE* f = fopen(p_sOutputFile.c_str(), "ab");

// Write

fwrite(p_sData.c_str(), p_sData.length(), sizeof(char), f);

// Close

fclose(f);

}

// Write a binary file

size_t Utils::WriteBinaryFile(string p_sOutputFile, unsigned char *p_pcData, size_t p_nSize)

{

size_t nResult = 0;

FILE* f = fopen(p_sOutputFile.c_str(), "wb");

// Write

nResult = fwrite(p_pcData, p_nSize, sizeof(char), f);

// Close

fclose(f);

return nResult;

}

// Return hex string for a char

string Utils::CharToHexString(char p_cChar)

{

stringstream ss;

ss << hex << (int)p_cChar;

string mystr = ss.str();

return mystr;

}

// Convert int to hex

string Utils::IntToHexString(size_t p_iNumber)

{

std::stringstream stream;

stream << std::hex << p_iNumber;

std::string result(stream.str());

return result;

}

// Function used to check if a character is "string": [a-z][A-Z][0-9][Specail]

bool Utils::IsString(char p_cCharacter)

{

return (p_cCharacter >= 32 && p_cCharacter <= 126 &&

p_cCharacter != '"' && p_cCharacter != ')' && p_cCharacter != '(' && p_cCharacter != ',');

}

// Function to convert a string to lower

string Utils::ToLower(string p_sString)

{

string result = "";

for (size_t i = 0; i < p_sString.length(); i++)

{

if (p_sString[i] >= 65 && p_sString[i] <= 90) result += (char)(p_sString[i] + 32);

else result += p_sString[i];

}

return result;

}

ShellcodeCompiler/ShellcodeCompiler/Utils.cpp at master · dnangle/ShellcodeCompiler · GitHub

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