if params.len != 1 or params[0] == "-h" or params[0] == "--help" then
	current_program = get_shell.host_computer.File(program_path)
	exit "Usage: " + current_program.name + " <password file path>"
end if

crypto = include_lib(current_path + "/crypto.so")
if not crypto then exit("Unable to load crypto.so from " + current_path)

computer = get_shell.host_computer
password_file = computer.File(params[0])
if not password_file then
	password_file = computer.File(current_path + "/" + params[0])
end if
if not password_file then exit("Unable to find file: " + params[0])
if password_file.is_folder then exit("Expected a file, not a folder")
if not password_file.has_permission("r") then exit("Permission denied: " + password_file.path)

content = password_file.get_content
if not content then exit("Unable to read: " + password_file.path)

found = 0
for line in content.split(char(10))
	if line == "" then continue
	parts = line.split(":")
	if parts.len < 2 then continue
	user = parts[0]
	hash = parts[1]
	if user == "" or hash == "" then continue
	plain = crypto.decipher(hash)
	if not plain then continue
	print(user + ":" + plain)
	found = found + 1
end for

if found == 0 then print("No passwords could be deciphered")