password_manager/Password_manager/source/arg_func.cpp

#include "arg_func.h"
#include "func.h"
#include <string>
#include "win.h"
#include "func.h"
#include "buffer.h"
#include "cryptography.h"


const char* arg_get(Buffer& decrypted_buffer, const char* label)
{
	int pass = find_password_in_buffer(decrypted_buffer, label);
	if (pass < 0) {
		printf_s("Password not found\n");
		return nullptr;
	}
	return get_password_from_buffer(decrypted_buffer, pass);
}

const char* arg_generate(Buffer& decrypted_buffer, Buffer& encrypted_buffer, const char* label, Cryptography& crypto)
{
	printf_s("Generating password for %s\n", label);

	std::string password;
	generate_password(password, 15);

	int pass = find_password_in_buffer(decrypted_buffer, label);
	if (pass >= 0)	delete_password_from_buffer(decrypted_buffer, pass);

	add_password_to_buffer(decrypted_buffer, label, password.c_str());
	crypto.encrypt(&decrypted_buffer, &encrypted_buffer);
	save_buffer_to_file(encrypted_buffer);
	Index* index = (Index*)decrypted_buffer.buffer;
	return get_password_from_buffer(decrypted_buffer, index->count - 1);
}

const char* arg_input(Buffer& decrypted_buffer, Buffer& encrypted_buffer, const char* label, Cryptography& crypto)
{
	printf_s("Input password for %s:", label);

	std::string new_string = get_user_password();
	if (new_string.empty())
	{
		printf_s("error getting password\n");
		return nullptr;
	}

	int pass = find_password_in_buffer(decrypted_buffer, label);
	if (pass >= 0) delete_password_from_buffer(decrypted_buffer, pass);

	add_password_to_buffer(decrypted_buffer, label, new_string.c_str());
	crypto.encrypt(&decrypted_buffer, &encrypted_buffer);
	save_buffer_to_file(encrypted_buffer);
	Index* index = (Index*)decrypted_buffer.buffer;
	return get_password_from_buffer(decrypted_buffer, index->count - 1);
}

void arg_list(Buffer& decrypted_buffer)
{
	Index* index = (Index*)decrypted_buffer.buffer;
	Pass* pass = (Pass*)(decrypted_buffer.buffer + sizeof(Index));

	for (size_t i = 0; i < index->count; i++)
	{
		printf_s("label: %s\n", decrypted_buffer.buffer + pass[i].label + index->offset);
	}
}

void arg_delete(Buffer& in_buffer, Buffer& out_buffer, const char* label_to_del, Cryptography& crypto)
{
	printf_s("Deleting password for %s\n", label_to_del);
	int pass = find_password_in_buffer(in_buffer, label_to_del);
	if (pass < 0)
	{
		printf_s("Password not found\n");
		return;
	}

	delete_password_from_buffer(in_buffer, pass);

	crypto.encrypt(&in_buffer, &out_buffer);
	save_buffer_to_file(out_buffer);
	printf_s("Password deleted\n");
}

void arg_print_all_p(Buffer& decrypted_buffer, std::string& user_pass)
{
	printf_s("Input main password for confirmation:");
	std::string new_string = get_user_password();
	if (new_string.empty())
	{
		printf_s("Error getting password\n");
		return;
	}
	if (new_string != user_pass)
	{
		printf_s("Wrong password\n");
		return;
	}

	Index* index = (Index*)decrypted_buffer.buffer;
	Pass* pass = (Pass*)(decrypted_buffer.buffer + sizeof(Index));

	for (size_t i = 0; i < index->count; i++)
	{
		printf_s("label: %s\t\t\t", decrypted_buffer.buffer + pass[i].label + index->offset);
		printf_s("password: %s\n", decrypted_buffer.buffer + pass[i].password + index->offset);
	}
}



void arg_change(Buffer& decrypted_buffer, Buffer& encrypted_buffer, std::string& user_pass, Cryptography& crypto)
{
	printf_s("Input main password for confirmation:");

	std::string new_string = get_user_password();
	if (new_string.empty())
	{
		printf_s("Error getting password\n");
		return;
	}

	if (new_string != user_pass)
	{
		printf_s("Passwords don't match\n");
		return;
	}

	printf_s("Input new password:");
	new_string = get_user_password();
	if (new_string.empty())
	{
		printf_s("Error getting password\n");
		return;
	}

	printf_s("Input new password again:");
	user_pass = get_user_password();
	if (user_pass.empty())
	{
		printf_s("Error getting password\n");
		return;
	}

	if (new_string != user_pass)
	{
		printf_s("Passwords don't match\n");
		return;
	}

	crypto.generate_key_and_iv_from_password(new_string.c_str(), new_string.size());
	crypto.encrypt(&decrypted_buffer, &encrypted_buffer);
	save_buffer_to_file(encrypted_buffer);
	printf_s("Password changed\n");
}

void arg_show(Buffer& decrypted_buffer, const char* label) {

	int pass = find_password_in_buffer(decrypted_buffer, label);

	if (pass < 0)
		printf_s("Password not found\n");
	else
		printf_s("Password: %s\n", get_password_from_buffer(decrypted_buffer, pass));
}